Teach you to upgrade the BIOS of the graphics card (2)

2. Backup the current BIOS

The backup BIOS parameter is "b", the command format is "nvflash -b", that is, the backup graphics card BIOS, coexist Is the "filename" file. In addition, the backup BIOS can also be done in advance under Windows, that is, through the NVIDIA BIOS Editor software.

3. Flash BIOS Process

After completing the backup work, enter "nvflash -f" to write the new BIOS to the ROM chip. During the refresh process, the screen will be shaken and blackened for a duration of about 10 seconds. If you return to the DOS interface again, the refresh is successful (Figure 2).

It is important to note that during the refresh process, you must not power off or interrupt, so as to avoid the refresh failure

How to refresh the ATi graphics card BIOS

1.ATi graphics card BIOS regular refresh method

(1) First backup the BIOS of the current graphics card. Start the machine into a pure DOS environment, and enter the BIOS folder under the C drive. Enter "Flashrom.exe -s 0 backup.rom" at the command prompt and press Enter. You can back up the BIOS information of the current graphics card to the BIOS folder and name it "backup.rom".

Note that when entering the above command, there is a space between "Flashrom.exe" and "-s"; there is also a space between "-s" and "0", where 0 is a number 0 does not know how to sign, it means the number of the graphics card in the system, that is, the AGP graphics card; there is also a space between 0 and Backup.rom.

(2) At the command prompt, type "Flashrom -p 0 newbios.rom" ("newbios.rom" is the name of the upgraded BIOS file). After pressing the Enter key, the program will write the new BIOS. Into the current graphics card BIOS chip. After waiting a few seconds, if you find that there is no error message, you can restart your computer (Figure 3).

Tip: When using Flashrom and various command parameters, you can implement different functions:

-p : Write a file named "filename" to the ROM chip of the graphics card. BIOS file, and num indicates the number of one of the graphics cards in the system

-s: Backs up the BIOS file in the ROM chip of the first graphics card in the system and named it "filename"

- i: Display the parameter information of the ATi graphics card

2. Add the refresh command parameter according to the actual situation

(1) Force refresh by "-f" parameter

Flashrom is refreshing The graphics card BIOS will check the SSID (BIOS and device ID) of the new BIOS. If the ID of the new BIOS does not match the ID of the graphics card itself, it will refuse to refresh and give a warning message - prompt if you want to force refresh, you need to add " -f" parameter (Figure 4).

If you confirm that the new BIOS file supports the current graphics card, you can type "Flashrom -p -f 0 newbios.rom" when refreshing, and then press Enter to execute. Note that there is a space between "-f" and "-p" and "0".

(2) Add "-atmel" or "-sst" parameters

For some graphics cards that use mBGA package memory, if you add the "-f" parameter or can not refresh, then you must Note: If the BIOS chip of the graphics card is ATM, add the "-atmel" parameter to the command, which is "Flashrom -p -f atmel 0 newbios.rom"; if it is SST, add "- The sst parameter, which is "Flashrom -p -f -sst 0 newbios.rom" or "Flashrom -p 0 newbios.rom -f -sst".

What if the BIOS fails to refresh?

If there is a flower screen or instability after refreshing, then the backup BIOS file will be brushed back to the graphics card. The specific refresh method is The same way to refresh the new BIOS is to change "newbios.rom" in the command line to "backup.rom". Next, we will focus on the remedies for black screens after refresh.

Method 1.

First unplug the AGP graphics card, plug in the PCI graphics card, boot, enter the motherboard BIOS setup program, select the "Intergrated Peripherals" option, the "Init Display First" option Change the value to "PCI Slot". Then save the settings and shut down.

Next, plug the AGP card back, but still connect the monitor to the PCI graphics card and reboot. Finally, follow the previous refresh method and brush the correct BIOS file back. One point to note here is to specify the number of the AGP graphics card when entering the refresh command (0 means AGP interface).

Method 2.

If there is no PCI graphics card, you can also "black out" the operation, that is, perform a "blind brush" operation. First find another machine, and create an automatic batch file (AUTOEXEC.BAT) on the DOS boot floppy disk, write the following command line in the text file: "nvflash" (NVIDIA graphics card use, the command is for backup BIOS file name) or "Flashrom -p 0 Backup.rom" (used by ATi graphics card).

After the batch file is edited, use the floppy disk to restart the computer that needs to repair the BIOS of the graphics card. After the disk is finished, wait for more than ten seconds, and finally restart the machine to resume normal operation.

Tips: There is a certain risk in refreshing Bios. Before refreshing Bios, please backup the original display card Bios, just in case!